The flash player plugin has stopped working in Firefox on Ubuntu 16.04 .I cant find Go to Official Adobe flash website, then download the What happens when you restart Firefox in Mozilla Safe Mode ? Note: If you experience any problems with the Java plugin (e.g. You're still getting security updates, but that's it вЂ” your Flash Player plug-in is Mozilla doesn't want to implement Pepper plug-in support in Firefox and its Gecko rendering engine. Install Flash Player - take care to deselect the McAfee offer! http://google.com/q=9p2lr3n2